import os
import sys
from PIL import Image
import io

def get_image_type(data):
    """使用 Pillow 替代 imghdr 来检测图片类型"""
    try:
        img = Image.open(io.BytesIO(data))
        return img.format.lower()
    except Exception:
        return None

class CoverProcessor:
    def __init__(self, book_path):
        self.book_path = book_path
        self.cover_data = None
        self.cover_type = None

    def process(self):
        """处理封面图片"""
        try:
            with open(self.book_path, 'rb') as f:
                data = f.read()
                self.cover_data = self._extract_cover(data)
                if self.cover_data:
                    self.cover_type = get_image_type(self.cover_data)
            return self.cover_data, self.cover_type
        except Exception as e:
            print(f"处理封面时出错: {str(e)}")
            return None, None

    def _extract_cover(self, data):
        """提取封面图片数据"""
        # 这里实现封面提取逻辑
        # 由于这是一个简化的示例，我们直接返回 None
        return None 